Lock valve for gasoline motor-supply tanks



March 422 1927.l

J. R. BI'NGAMAN Filed May 15 1926 ,gw f//z LOCK VALVE FOR GSQLINE MOTORl SUPILY TANKS INVEN TOR.

Jam H. Bmamn,

Y vBY ATTORNEY;

f Patented Mar. 221927.V

:entre JOI-IN R. BINGAIVIAN, OF WEST READNG, PENNSYLVANIA.

Appnetien filed nay' 15,

invention relates to a lock valve device Vfor the gasoline supplyof a motor, and more particularly it is adapted to lock the outlet pipe of a supply tank ora vacuum cup tank commonly employed to feed gasoline to the motor Y:trom a large main storage tank; my improved lock valve. beingk of simple Aand economical construction and extending through and intermediately supported in a tank wall aperture with its key-actuated projecting outer end extending'into a tanksupporting wall aperture-to .protect Vunauthorized tampering with the key-slotted closure for said end. My invention is fully described in connection with the` accompanying drawings, and the novel features are set forth in the appended claims. f

Fig. l is'a diagrammatic view, partlyV in section, showing a preferred embodiment ofr my invention applied to a vacuum-cup tank carried on the vdash-board of an automobile.

Fig. 2 is an enlarged View showing my lock device in longitudinalV section, on the line 2 of Figs. 3 and 4, and indicating its. intermediate support in a tank wall aperture and its projecting outer end extending into a protective dash-board aperture.

Fig. 3 is a cross sectional view -on the line 3 of Fig. 2.

Fig. 4'is an opposite .end cross-sectionalv view, on the line 4 of Fig. 2 but showing the valve'in seated position closingthe tank outlet.

Fig. 5 is a fragmentary view of the tank,

indicating the polygonal aperture the lat- Y yter to non-rotatably support my improved lock device.

'In theV preferred construction shown in.-

the drawings, 6 indicates thev dash-board of an automobile, provided with an aperture 7 and carrying as usual, firmly secured `"thereto, a supply or vacuum-cup tank 8, which operates in well-known manner to 'supply gasoline from a main tank, ynot shown, through anoutlet pipe 9,to the motor carbureter, not shown; such gasoline feed being commonly employed and vnofurther description or showing being required. Outlet pipe 9, in my improved construction, `is provided at its end within the tank 8, with a valve seat 10, andthe tank wall 8u has an aperture 11, preferably of polygonal outline as indicated for a purpose hereinafter described.

The preferred form of my improved lockV device, shown more clearly'in Figs. 2, 3, and

ieee.Y serial nfio'aeie.

4, comprises an L-shaped structure, the main member 15 lof which extends through the tank Vwall '82, and is provided with a bearing 16, intermediate its lengthv and preferably polygonal as shown, so as to non-rotatably engage inwall aperture 11, in which position TENT oFFicE;

itis firmly held, either bysolder, or, as i shown,by rimnut 17 clamping the tank wall 8a againstbearing flange 18,; suitable cement.- or packmg'bemg interposed if required, tomake a liquid tight joint, and the polygonal aperture 11 taking any torsionalf strains. The outwardly'projecting end 20 of said member 15 extends into the. dash-board aperture 7 as shown, andthe inwardly projecting end 21 thereof hasvan L-extension 22,

the tankV wall 8a as described; and both said main member 15,@andv L-eXtension 22 are centrally bored longitudinally asshownto vpositioned to overhangthe outlet pipe valve `seat 10, when said member 15 1s secured to form a 'main chamber 23 and a communicat-ing extension chamber24 each closed by .an end plug, 25 and 26 respectively, engaging the screw-threaded outer` ends oftheir respectivel chambers. .1, l Plug 26-iscentrally bored to form a bearingV forV alongi tudinally movable valve stem '30 having a head'31, a retracting spring 3 2 seating` betweensaid head and adjustably positioned plug, and a conical end 33 adaptedto engage seatv 10 when inv lowered position so as `to shut olf the `flow of gasoline from the tank 8, and stop the motor.y

W'ithin chamber23 is rotatably mounted a rod 35, a hemispherical portion at one end thereof, as shown, being cut away to form a flat face 36 against lwhichvalve head 31 normally rests and which acts as a -cam to project valve stem 30 when Vrod 35 is rotated, as indicated in Fig. 4. The opposite.`

end of rod 35 has a reduced. portion 37 forming an annular space for packing 38which is suitablycompressed by an annular flange 39 on the inner end of plugy 25 to prevent leakage. Plug 25 is suitably apertured as indicated at 40 for passagey therethrough of a key 41 and .rod end 37 is slotted, as indicated at 42, to receive the key-bit,lsuch slot as shown, being preferably V-shaped to prev vent any ordinary key from operating the same. y l

Valve stem 30 can beoperated only by rotating rod 35, and access to the latter, except by the specially shaped key provided,

can'be had only byremoving plug 25. To v prevent unauthorized removal of said plug, means to retain the latter in set adjusted position is provided, such means, as indicated consistingY of a sci'ew L5 engaging a threaded opening in the end of the main extension 20, and normally being located within apertures 7, so that removal of the tank 8 is required before said screw 45 can be operated.

Plugs 25 and' 26 may `have spanner wrench holes 47, as indicated, to facilitate turningV them to adjusted position; and instead of the il-shaped' key-bit slot 4t2 indicated, vari ousl'y positioned Spanner-bit slots may be employed, each lock having such slots suit-` ably located forv its special key. Y

From the foregoing description it will be readily seen that my improved lock valve may determinedly control the opening or closing of outlet pipe 9 to supply or cut olf gasoline flow to the motor carbureter; that it can be operated only by the key provided therefor, and cannot be tampered with without removalv of the tank 8 from its fixed position,-such removal requiring time and tools, thus preventing theft of the machine. My lock is simple, effective, and theft aroof; and due to the fact that the small storage of gasoline in the carbureter permits starting ofthe motor, leads to capture in the act ofthe would-be thief, as lie may readily start the motor, but can travel but a short distance before the engine will stop for lack inner valve seat, and a tank-supporting wall having an aperture; an L-shaped lock device comprising a main portion extending through and non-rotatably supported intermediately in a polygonal shaped aperture in the tank Vwall with its outer end projected into said supporting wall aperture and its tank enclosed E -end overhanging said inner valve seat, a spring-retracted valve mounted in said trend and adapted to said seat, a rotatably mounted member in said main portion'having a valve-operating cam atr one end and a key-way slot in the opposite end, Va key slotted end closure for said main portion, means arranged in said main portion inwardly of the slotted enclosure preventing Huid passage between said main portion and said rotatably mounted member and a set screw for the end closure normally located within said supporting wall aperture.

2. In combination with a gasoline motor supply tank having a bottom outlet with an inner valve seat, and a tank-supporting wall having an aperture; an L-shaped lock valve device comprising a main portion extending through and non-rotatably supported intermediately in a polygonal shaped aperture in the tank wall with its outer end .projected into said supporting wall aperture and its tank-enclosed L-end overhangino said inner valve seat, a spring-retracted valve mounted in said L-end and adapted to said seat, a rotatably mounted member in said main portion having an end cam-portion overhanging said valve and a keyway slotted reduced opposite end, a packing ring surf rounding the latter, a key slotted end closure plug for said main portion having a packing compressing annular flange, and a plug retaining screw in said main portion end 'i normally located within said supporting wall aperture.

In testimony whereof I aflix my signature.

JOHN n. lnriieanvniiv.

valve 

